S32K144 ADC ADC0_IRQn,how to check the intrupt channel

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S32K144 ADC ADC0_IRQn,how to check the intrupt channel

1,142 Views
wdong
Contributor III

Hello,

when i use the ADC ADC0_IRQn handler, my question is :how to identify the convertion complete channel in the hanler?It seems that the interupt is enter when each channel's convetion is comlete. Thank you first!

codes are bellow

init:

 /*adc*/
 ADC_DRV_ConfigConverter(INST_ADCONV1, &adConv1_ConvConfig0);
 ADC_DRV_AutoCalibration(INST_ADCONV1);
 ADC_DRV_ConfigChan(INST_ADCONV1, 0U, &adConv1_ChnConfig0);
 ADC_DRV_ConfigChan(INST_ADCONV1, 1U, &adConv1_ChnConfig1);
 INT_SYS_InstallHandler(ADC0_IRQn, &ADC0_IRQHandler, (isr_t*) 0);
 if (adConv1_ConvConfig0.resolution == ADC_RESOLUTION_8BIT)
  g_adc0Max = (uint16_t) (1 << 8);
 else if (adConv1_ConvConfig0.resolution == ADC_RESOLUTION_10BIT)
  g_adc0Max = (uint16_t) (1 << 10);
 else
  g_adc0Max = (uint16_t) (1 << 12);
 /* Calculate the value needed for PDB instance
  * to generate an interrupt at a specified timeout.
  * If the value can not be reached, stop the application flow
  */
 if (!calculateIntValue(&pdb0_InitConfig0, PDLY_TIMEOUT, &delayValue))
 {
  /* Stop the application flow */
  while(1);
 }
 /* Setup PDB instance
  *  -   See PDB component for details
  *  Note: Pre multiplier and Prescaler values come from
  *        calculateIntValue function.
  */
 /*pdb for ADC*/
 PDB_DRV_Init(INST_PDB0, &pdb0_InitConfig0);
 PDB_DRV_Enable(INST_PDB0);
 PDB_DRV_ConfigAdcPreTrigger(INST_PDB0, 0UL, &pdb0_AdcTrigInitConfig0);
 PDB_DRV_ConfigAdcPreTrigger(INST_PDB0, 0UL, &pdb0_AdcTrigInitConfig1);
 PDB_DRV_SetTimerModulusValue(INST_PDB0, (uint32_t) delayValue);
 PDB_DRV_SetAdcPreTriggerDelayValue(INST_PDB0, 0UL, 0UL, (uint32_t) delayValue);
 PDB_DRV_LoadValuesCmd(INST_PDB0);
 PDB_DRV_SoftTriggerCmd(INST_PDB0);
 INT_SYS_EnableIRQ(ADC0_IRQn);

 

hanler:

void ADC0_IRQHandler(void)
  {
   ADC_DRV_GetChanResult(INST_ADCONV1, 0U, &g_adc0Ch1RawValue);
   ADC_DRV_GetChanResult(INST_ADCONV1, 1U, &g_adc0Ch2RawValue);
   PINS_DRV_TogglePins(LED_GPIO, (1 << LED_CHN_1));
   ulNotifiedValue |= (1 << 0);
  }

 

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1,123 Views
danielmartynek
NXP TechSupport
NXP TechSupport

Hello Wang,

When a conversion is complete, the SC1n[COCO] flag is set.

You can read it with the ADC_DRV_GetConvCompleteFlag(const uint32_t instance, const uint8_t chanIndex) function.

 

Regards,

Daniel

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wdong
Contributor III

Hello,

Firstly, thanks for your reply.

But, when I add the code as below, the callback func still execute twice, that means when channel 0 convert complete, ADC_DRV_GetConvCompleteFlag(ADC0_INSTANCE, 0U)  and ADC_DRV_GetConvCompleteFlag(ADC0_INSTANCE, 1U) will both return SUCESS. Now I am confused, the project is attached, could  you check it please, many thanks!

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